A. Elaseer et G. Nickless, DETERMINATION OF SELENIUM BY GAS-CHROMATOGRAPHY ELECTRON-CAPTURE DETECTION USING A RAPID DERIVATIZATION PROCEDURE, Journal of chromatography, 664(1), 1994, pp. 77-87
A rapid method of determination of selenium by gas chromatography with
electron-capture detection using 3-bromo-5-trifluoromethyl-1,2-diamin
obenzene as complexing ligand was investigated. The temperature-depend
ent reaction was kinetically evaluated and at 100-degrees-C the time f
or the quantitative formation of piazselenol can be reduced to less th
an 5 min without any discrepancies in the quantitative determination o
f selenium. The method was applied to the determination of the organos
elenium compounds evolved from incubated sediments. The compounds were
separated and identified as dimethylselenide and dimethyldiselenide u
sing GC-MS.